code: def test_default_configuration_regression(self):
      transformation, original = _test_preprocessing(
          SelectRegressionRates,
          dataset="boston",
      )
      self.assertEqual(transformation.shape[0], original.shape[0])
      # From 13 to 12 features
      self.assertEqual(transformation.shape[1], 12)
      self.assertFalse((transformation == 0).all())
  
file_path: auto-sklearn/test/test_pipeline/components/feature_preprocessing/test_select_rates_regression.py
imports: import numpy
  import scipy.sparse
  import sklearn.preprocessing
  from autosklearn.pipeline.components.feature_preprocessing.select_rates_regression import SelectRegressionRates
  from autosklearn.pipeline.util import _test_preprocessing, get_dataset
  import unittest
label_desc: Use image node_id 2 for calling the SelectRegressionRatesComponentTest obj's underlying member method code with example usage: obj.test_default_configuration_regression() without return types